#!/usr/bin/python3

a = 21
b = 10
c = 0

print("21 == 10：", 21 == 10)
print("21 ！= 10：", 21 != 10)
print("21 < 10：", 21 < 10)
print("21 > 10：", 21 > 10)
print("21 <= 10：", 21 <= 10)
print("21 >= 10：", 21 >= 10)
